metarule
/ˈmɛtəˌruːl/
noun
- A rule that governs or describes other rules; a higher-level rule.
- Programmers use metarules to define how other rules in the system should behave.
- The game's metarule states that any new rule must be approved by all players.
- In grammar, a metarule might explain how to form plural nouns from singular ones.